﻿using MySql.Data.MySqlClient;
using SuperJoe.Framework.Logging;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WWX.Admin.DAL
{
    /// <summary>  
    /// 数据访问抽象基础类  
    /// </summary>  
    public abstract class DbHelperMySQL
    {
        //数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库.       
        public static string connectionString = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
        public DbHelperMySQL()
        {
        }

        public static MySqlConnection GetSqlConnection()
        {
            return new MySqlConnection(connectionString);
        }

        #region 公用方法  
        /// <summary>  
        /// 得到最大值  
        /// </summary>  
        /// <param name="FieldName"></param>  
        /// <param name="TableName"></param>  
        /// <returns></returns>  
        public static int GetMaxID(string FieldName, string TableName)
        {
            string strsql = "select max(" + FieldName + ")+1 from " + TableName;
            object obj = GetSingle(strsql);
            if (obj == null)
            {
                return 1;
            }
            else
            {
                return int.Parse(obj.ToString());
            }
        }
        /// <summary>  
        /// 是否存在  
        /// </summary>  
        /// <param name="strSql"></param>  
        /// <returns></returns>  
        public static bool Exists(string strSql)
        {
            object obj = GetSingle(strSql);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        /// <summary>  
        /// 是否存在（基于MySqlParameter）  
        /// </summary>  
        /// <param name="strSql"></param>  
        /// <param name="cmdParms"></param>  
        /// <returns></returns>  
        public static bool Exists(string strSql, params MySqlParameter[] cmdParms)
        {
            object obj = GetSingle(strSql, cmdParms);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        /// <summary>
        /// 执行多个SQL对象，但是不保证事务。注意：多个SQL对象，会执行多次数据库操作，但是共用一个数据库连接。
        /// </summary>
        /// <param name="sqlObjects"></param>
        /// <returns></returns>
        public static int ExecuteSqls(IEnumerable<Tuple<string, MySqlParameter[]>> sqlObjects)
        {
            int count = 0;

            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                MySqlCommand cmd = conn.CreateCommand();
                foreach (var item in sqlObjects)
                {
                    cmd.CommandText = item.Item1;
                    if (item.Item2 != null)
                    {
                        cmd.Parameters.AddRange(item.Item2);
                    }

                    int affectedRows = cmd.ExecuteNonQuery();
                    if (NeedCheckAffectedRows(item.Item1) && affectedRows == 0)
                    {
                        var exception = new ApplicationException("数据库影响行数为0，操作失败,SQL:" + item.Item1);
                        exception.Data.Add("SqlParameters", item.Item2);
                        throw exception;
                    }

                    LogDebug(cmd);
                    count += affectedRows;
                    cmd.Parameters.Clear();
                }
            }

            return count;
        }

        /// <summary>
        /// 执行多个SQL语句，但是不保证事务。注意：多个SQL语句，会执行多次数据库操作
        /// /// </summary>
        /// <param name="sqls"></param>
        /// <returns></returns>
        public static int ExecuteSqls(IEnumerable<string> sqls)
        {
            int count = 0;

            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                MySqlCommand cmd = conn.CreateCommand();
                foreach (var item in sqls)
                {
                    cmd.CommandText = item;

                    int affectedRows = cmd.ExecuteNonQuery();
                    if (NeedCheckAffectedRows(item) && affectedRows == 0)
                    {
                        var exception = new ApplicationException("数据库影响行数为0，操作失败,SQL:" + item);
                        throw exception;
                    }

                    LogDebug(cmd);
                    count += affectedRows;
                }

            }
            return count;
        }

        #endregion

        #region  执行简单SQL语句  

        /// <summary>  
        /// 执行SQL语句，返回影响的记录数  
        /// </summary>  
        /// <param name="SQLString">SQL语句</param>  
        /// <returns>影响的记录数</returns>  
        public static int ExecuteSql(string SQLString)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (MySql.Data.MySqlClient.MySqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }

        public static int ExecuteSqlByTime(string SQLString, int Times)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        cmd.CommandTimeout = Times;
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (MySql.Data.MySqlClient.MySqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }

        /// <summary>  
        /// 执行多条SQL语句，实现数据库事务。  
        /// </summary>  
        /// <param name="SQLStringList">多条SQL语句</param>       
        public static int ExecuteSqlTran(List<String> SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                MySqlCommand cmd = new MySqlCommand();
                cmd.Connection = conn;
                MySqlTransaction tx = conn.BeginTransaction();
                cmd.Transaction = tx;
                try
                {
                    int count = 0;
                    for (int n = 0; n < SQLStringList.Count; n++)
                    {
                        string strsql = SQLStringList[n];
                        if (strsql.Trim().Length > 1)
                        {
                            cmd.CommandText = strsql;
                            count += cmd.ExecuteNonQuery();
                        }
                    }
                    tx.Commit();
                    return count;
                }
                catch
                {
                    tx.Rollback();
                    return 0;
                }
            }
        }
        /// <summary>  
        /// 执行带一个存储过程参数的的SQL语句。  
        /// </summary>  
        /// <param name="SQLString">SQL语句</param>  
        /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>  
        /// <returns>影响的记录数</returns>  
        public static int ExecuteSql(string SQLString, string content)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                MySqlCommand cmd = new MySqlCommand(SQLString, connection);
                MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("?content", SqlDbType.NText);
                myParameter.Value = content;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (MySql.Data.MySqlClient.MySqlException e)
                {
                    throw e;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }

        /// <summary>  
        /// 执行带一个存储过程参数的的SQL语句。  
        /// </summary>  
        /// <param name="SQLString">SQL语句</param>  
        /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>  
        /// <returns>影响的记录数</returns>  
        public static object ExecuteSqlGet(string SQLString, string content)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                MySqlCommand cmd = new MySqlCommand(SQLString, connection);
                MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("?content", SqlDbType.NText);
                myParameter.Value = content;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    object obj = cmd.ExecuteScalar();
                    if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                    {
                        return null;
                    }
                    else
                    {
                        return obj;
                    }
                }
                catch (MySql.Data.MySqlClient.MySqlException e)
                {
                    throw e;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }

        /// <summary>
        /// 执行sql数据库事务，由调用方来控制事务操作。
        /// </summary>
        /// <param name="conn"></param>
        /// <param name="tran"></param>
        /// <param name="sqlObjects"></param>
        /// <returns></returns>
        public static int ExecuteExternalSqlTran(MySqlConnection conn, MySqlTransaction tran, IEnumerable<Tuple<string, MySqlParameter[]>> sqlObjects)
        {
            int count = 0;

            MySqlCommand cmd = conn.CreateCommand();
            cmd.Transaction = tran;
            foreach (var item in sqlObjects)
            {
                cmd.CommandText = item.Item1;
                cmd.Parameters.AddRange(item.Item2);

                var affectedRows = cmd.ExecuteNonQuery();
                if (NeedCheckAffectedRows(item.Item1) && affectedRows == 0)
                {
                    var exception = new ApplicationException("数据库影响行数为0，操作失败,SQL:" + item.Item1);
                    exception.Data.Add("SqlParameters", item.Item2);
                    throw exception;
                }
                LogDebug(cmd);
                count += affectedRows;
                cmd.Parameters.Clear();
            }

            return count;
        }

        /// <summary>
        /// 批量插入，使用SqlBulkCopy,另外由外部事务控制
        /// </summary>
        /// <param name="conn"></param>
        /// <param name="tran"></param>
        /// <param name="table"></param>
        public static void BulkInsertInExternalTran(MySqlConnection conn, MySqlTransaction tran, params DataTable[] tables)
        {
            if (tables != null && tables.Length > 0)
            {
                MySqlCommand cmd = conn.CreateCommand();
                cmd.Transaction = tran;

                foreach (DataTable table in tables)
                {
                    string sql = GenerateInserSql(table);
                    cmd.CommandText = sql;
                    var affectedRows = cmd.ExecuteNonQuery();

                    if (affectedRows == 0)
                    {
                        var exception = new ApplicationException("数据库影响行数为0，操作失败,SQL:" + sql);
                        throw exception;
                    }
                    LogDebug(cmd);
                    cmd.Parameters.Clear();
                }
            }
        }

        /// <summary>
        /// 批量插入，使用SqlBulkCopy
        /// </summary>
        /// <param name="table">需要更新到数据库的DataTable,需要在DataTable里面提供表名，另外列的大小写要跟数据库保持一致</param>
        public static void BulkInsertInInternalTran(params DataTable[] tables)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                MySqlCommand cmd = conn.CreateCommand();
                foreach (DataTable table in tables)
                {
                    string sql = GenerateInserSql(table);
                    cmd.CommandText = sql;
                    var affectedRows = cmd.ExecuteNonQuery();

                    if (affectedRows == 0)
                    {
                        var exception = new ApplicationException("数据库影响行数为0，操作失败,SQL:" + sql);
                        throw exception;
                    }
                    LogDebug(cmd);
                    cmd.Parameters.Clear();
                }
            }
        }


        /// <summary>
        /// 生成插入数据的sql语句。
        /// </summary>
        /// <param name="database"></param>
        /// <param name="command"></param>
        /// <param name="table"></param>
        /// <returns></returns>
        private static string GenerateInserSql(DataTable table)
        {
            var names = new StringBuilder();
            var values = new StringBuilder();
            var count = table.Columns.Count;
            foreach (DataColumn column in table.Columns)
            {
                if (names.Length > 0)
                {
                    names.Append(",");
                }
                names.AppendFormat("{0}", column.ColumnName);
            }

            var i = 0;
            foreach (DataRow row in table.Rows)
            {
                if (i > 0)
                {
                    values.Append(",");
                }
                values.Append("(");
                for (var j = 0; j < count; j++)
                {
                    if (j > 0)
                    {
                        values.Append(", ");
                    }
                    values.AppendFormat("'{0}'", row[j]);
                }
                values.Append(")");
                i++;
            }
            return string.Format("INSERT INTO {0}({1}) VALUES {2}", table.TableName, names, values);
        }

        private static bool NeedCheckAffectedRows(string sql)
        {
            if (sql.StartsWith("insert", StringComparison.OrdinalIgnoreCase)
                || sql.StartsWith("update", StringComparison.OrdinalIgnoreCase))
            {
                return true;
            }

            return false;
        }


        /// <summary>  
        /// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)  
        /// </summary>  
        /// <param name="strSQL">SQL语句</param>  
        /// <param name="fs">图像字节,数据库的字段类型为image的情况</param>  
        /// <returns>影响的记录数</returns>  
        public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                MySqlCommand cmd = new MySqlCommand(strSQL, connection);
                MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("?fs", SqlDbType.Image);
                myParameter.Value = fs;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (MySql.Data.MySqlClient.MySqlException e)
                {
                    throw e;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }

        /// <summary>  
        /// 执行一条计算查询结果语句，返回查询结果（object）。  
        /// </summary>  
        /// <param name="SQLString">计算查询结果语句</param>  
        /// <returns>查询结果（object）</returns>  
        public static object ExecuteScalar(string sqlString, MySqlParameter[] parameters = null)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(sqlString, connection))
                {
                    try
                    {
                        if (parameters != null)
                        {
                            cmd.Parameters.AddRange(parameters);
                        }
                        connection.Open();
                        object obj = cmd.ExecuteScalar();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (MySql.Data.MySqlClient.MySqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }
        public static object GetSingle(string SQLString, int Times)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        cmd.CommandTimeout = Times;
                        object obj = cmd.ExecuteScalar();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (MySql.Data.MySqlClient.MySqlException e)
                    {
                        connection.Close();
                        throw e;
                    }
                }
            }
        }
        /// <summary>  
        /// 执行查询语句，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )  
        /// </summary>  
        /// <param name="strSQL">查询语句</param>  
        /// <returns>MySqlDataReader</returns>  
        public static MySqlDataReader ExecuteReader(string strSQL)
        {
            MySqlConnection connection = new MySqlConnection(connectionString);
            MySqlCommand cmd = new MySqlCommand(strSQL, connection);
            try
            {
                connection.Open();
                MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                return myReader;
            }
            catch (MySql.Data.MySqlClient.MySqlException e)
            {
                throw e;
            }

        }
        /// <summary>  
        /// 执行查询语句，返回DataSet  
        /// </summary>  
        /// <param name="SQLString">查询语句</param>  
        /// <returns>DataSet</returns>  
        public static DataSet Query(string SQLString)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
                    command.Fill(ds, "ds");
                }
                catch (MySql.Data.MySqlClient.MySqlException ex)
                {
                    throw new Exception(ex.Message);
                }
                return ds;
            }
        }

        /// <summary>
        /// 执行查询语句，返回DataSet
        /// </summary>
        /// <param name="SQLString">查询语句</param>
        /// <returns>DataSet</returns>
        public static DataTable QueryTable(string SQLString)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                DataTable table = null;
                try
                {
                    connection.Open();
                    MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
                    DataSet ds = new DataSet();
                    command.Fill(ds, "ds");
                    if (ds != null && ds.Tables.Count > 0)
                    {
                        table = ds.Tables[0];
                    }
                    System.Diagnostics.Trace.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff") + " " + SQLString);
                    LoggerUtil.Debug(SQLString);
                }
                catch (SqlException ex)
                {
                    LoggerUtil.Error(ex.ToString());
                    return null;
                }
                return table;
            }
        }

        public static DataSet Query(string SQLString, int Times)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
                    command.SelectCommand.CommandTimeout = Times;
                    command.Fill(ds, "ds");
                }
                catch (MySql.Data.MySqlClient.MySqlException ex)
                {
                    throw new Exception(ex.Message);
                }
                return ds;
            }
        }
        #endregion

        #region 执行带参数的SQL语句  

        /// <summary>  
        /// 执行SQL语句，返回影响的记录数  
        /// </summary>  
        /// <param name="SQLString">SQL语句</param>  
        /// <returns>影响的记录数</returns>  
        public static int ExecuteSql(string SQLString, params MySqlParameter[] cmdParms)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        int rows = cmd.ExecuteNonQuery();
                        cmd.Parameters.Clear();
                        return rows;
                    }
                    catch (MySql.Data.MySqlClient.MySqlException e)
                    {
                        throw e;
                    }
                }
            }
        }


        /// <summary>  
        /// 执行多条SQL语句，实现数据库事务。  
        /// </summary>  
        /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>  
        public static void ExecuteSqlTran(Hashtable SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                using (MySqlTransaction trans = conn.BeginTransaction())
                {
                    MySqlCommand cmd = new MySqlCommand();
                    try
                    {
                        //循环  
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }

        /// <summary>  
        /// 执行多条SQL语句，实现数据库事务。  
        /// </summary>  
        /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>  
        public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                using (MySqlTransaction trans = conn.BeginTransaction())
                {
                    MySqlCommand cmd = new MySqlCommand();
                    try
                    {
                        int indentity = 0;
                        //循环  
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
                            foreach (MySqlParameter q in cmdParms)
                            {
                                if (q.Direction == ParameterDirection.InputOutput)
                                {
                                    q.Value = indentity;
                                }
                            }
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            foreach (MySqlParameter q in cmdParms)
                            {
                                if (q.Direction == ParameterDirection.Output)
                                {
                                    indentity = Convert.ToInt32(q.Value);
                                }
                            }
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }

        /// <summary>  
        /// 执行一条计算查询结果语句，返回查询结果（object）。  
        /// </summary>  
        /// <param name="SQLString">计算查询结果语句</param>  
        /// <returns>查询结果（object）</returns>  
        public static object GetSingle(string SQLString, params MySqlParameter[] cmdParms)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        object obj = cmd.ExecuteScalar();
                        cmd.Parameters.Clear();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (MySql.Data.MySqlClient.MySqlException e)
                    {
                        throw e;
                    }
                }
            }
        }

        /// <summary>  
        /// 执行查询语句，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )  
        /// </summary>  
        /// <param name="strSQL">查询语句</param>  
        /// <returns>MySqlDataReader</returns>  
        public static MySqlDataReader ExecuteReader(string SQLString, params MySqlParameter[] cmdParms)
        {
            MySqlConnection connection = new MySqlConnection(connectionString);
            MySqlCommand cmd = new MySqlCommand();
            try
            {
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                cmd.Parameters.Clear();
                return myReader;
            }
            catch (MySql.Data.MySqlClient.MySqlException e)
            {
                throw e;
            }
            //          finally  
            //          {  
            //              cmd.Dispose();  
            //              connection.Close();  
            //          }     

        }

        /// <summary>  
        /// 执行查询语句，返回DataSet  
        /// </summary>  
        /// <param name="SQLString">查询语句</param>  
        /// <returns>DataSet</returns>  
        public static DataSet Query(string SQLString, params MySqlParameter[] cmdParms)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                MySqlCommand cmd = new MySqlCommand();
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
                {
                    DataSet ds = new DataSet();
                    try
                    {
                        da.Fill(ds, "ds");
                        cmd.Parameters.Clear();
                    }
                    catch (MySql.Data.MySqlClient.MySqlException ex)
                    {
                        throw new Exception(ex.Message);
                    }
                    return ds;
                }
            }
        }


        private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, string cmdText, MySqlParameter[] cmdParms)
        {
            if (conn.State != ConnectionState.Open)
                conn.Open();
            cmd.Connection = conn;
            cmd.CommandText = cmdText;
            if (trans != null)
                cmd.Transaction = trans;
            cmd.CommandType = CommandType.Text;//cmdType;  
            if (cmdParms != null)
            {


                foreach (MySqlParameter parameter in cmdParms)
                {
                    if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                        (parameter.Value == null))
                    {
                        parameter.Value = DBNull.Value;
                    }
                    cmd.Parameters.Add(parameter);
                }
            }
        }

        #endregion

        private static void LogDebug(MySqlCommand cmd)
        {
            LoggerUtil.Debug(cmd.CommandText + "$" + GetParameterString(cmd.Parameters));
        }

        private static string GetParameterString(MySqlParameterCollection parameters)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("SqlParameters[");

            foreach (MySqlParameter p in parameters)
            {
                sb.AppendFormat("{0}:{1}|", p.ParameterName, p.Value);
            }

            sb.Append("]");
            return sb.ToString();
        }
    }
}
